The name of the topic you want to create. Topic names must include only
uppercase and lowercase ASCII letters, numbers, underscores, and hyphens, and must
be
between 1 and 256 characters long.

If you don't specify a name, AWS CloudFormation generates a unique physical ID and
uses
that ID for the topic name. For more information, see Name
Type.

Important

If you specify a name, you can't perform updates that require replacement of this
resource. You can perform updates that require no or some interruption. If you must
replace the resource, specify a new name.